package com.xinzhi.interceptor;

import com.alibaba.fastjson.JSON;
import com.xinzhi.dao.TokenMapper;
import com.xinzhi.model.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class UserInterceptor implements HandlerInterceptor {

    @Autowired
    private TokenMapper tokenMapper;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("token");
        if (token != null && token != "") {
            Integer id = tokenMapper.selectByToken(token);
            if (id != null && id > 0) {
                return true;
            }
        }
        String msg = JSON.toJSONString(Result.error(403,"error"));
        response.getWriter().println(msg);
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
